Mantenna is a member of the Evil Horde and most gruesome and frightening of Hordak's minions. He is an alien creature, with an insect-like appearance, that includes bulging yellow eyes and four spiky legs. He has an enlarged head with bright red skin, while the rest o his body is blue. His name seems to be an amalgamation of 'Man' and 'Antenna'. A combination of words that suggest a humanoid insect. He is a creature with pop-out antenna eyes. A Rebrunk Nurus from Phelibio IX, Mantenna has the frightening ability to see and hear over great distances with his highly sensitive ears and periscope scanners. He can do more than just see with those wide eyes, he can fire a variety of horrible beams from them as well including paralysis and stun beams, balance distorter rays, and laser waves. Mantenna is also an agile scout and often goes out well ahead of his Horde companions to make sure their way is clear for conquest. Often underestimated warrior as well, Mantenna rarely needs assistance on his scouting missions, surprising foes with his fiendish powers and monstrous strength. He uses his antenna eyes to spy on the enemy! The mere sight of this Horde harbinger has led entire villages to vacate in an instant, for the presence of his telescoping eyes mean the Horde is not far behind! He's got a circular mouth filled with sharp teeth, and mandibular fangs to move his food in, almost like a caterpillar.

Origin #1 (Mini-Comics)

In the Mini-Comics, Mantenna is the least featured of the four original Horde warriors. He did, however, have his own showcase mini-comic, 'Mantenna and the Menace of the Evil Horde!'.

Origin #2 (POP Filmation)

When the Horde appear in the She-Ra: Princess of Power series, Mantenna retains his "spy sight" from the minicomics, and can fire energy beams of different varieties from his eyes, such as stun beams, gravity distortion beams, and freeze rays. Mantenna is a nervous stuttering imbecile mainly used for comic relief, with a running gag that Hordak frequently sends him down a trap door in front of his throne for any number of reasons. Although, once or twice Mantenna actually turns the tables on Hordak and sends him plummeting down his own trap.

Origin #3 (200X Series)

Mantenna and the other original Horde warriors are featured in a flashback in the episode "The Power of Grayskull". While not featured heavily, his appearance is far more serious and evil looking than it had been in She-Ra. A mini-statue of Mantenna was released by Four Horsemen Studios, based on their unreleased toy design.

Origin #4 (MOTUC Bios):

A Rebrunk Nurus from Phelibio IX, Mantenna has the frightening ability to see and hear over great distances with his highly sensitive ears and periscope screnners. He can do more than just see with those wide eyes, he can fire a variety of horrible beams from them as well including paralysis beams, stun beams and laser waves. Mantenna is also an agile scout and often goes out well ahead of his Horde companions to make sure their way is clear for meandering, pillaging and the like. Since he is no slouch in the combat area either Mantenna rarely needs assistance on his scouting missions. He uses his antenna eyes to spy on the enemy!

Trivia (Clawful94): Mantenna was voiced by Lou Scheimer in the MOTU Filmation cartoons.